Introduction CAUTION. Details described in this manual

Transcription

1

2

3 Introduction This manual is a guide for using the MELDAS 60/60S Series, MELDASMAGIC64. Programming is described in this manual, so read this manual thoroughly before starting programming. Thoroughly study the "Precautions for Safety" on the following page to ensure safe use of this NC unit. *The "MELDAS60 Series" includes the M64A/M64/M65/M66/M65V. *The "MELDAS60S Series" includes the M64AS/M64S/M65S/M66S. Details described in this manual CAUTION For items described in "Restrictions" or "Usable State", the instruction manual issued by the machine maker takes precedence over this manual. An effort has been made to note as many special handling methods in this user's manual. Items not described in this manual must be interpreted as "not possible". This manual has been written on the assumption that all option functions are added. Refer to the specifications issued by the machine maker before starting use. Refer to the Instruction Manual issued by each machine maker for details on each machine tool. Some screens and functions may differ depending on the NC system or its version, and some functions may not be possible. Please confirm the specifications before use. General precautions () Refer to the following documents for details on handling MELDAS 60/60S Series Operation Manual... BNP-B280

4

5 Precautions for Safety Always read the specifications issued by the machine maker, this manual, related manuals and attached documents before installation, operation, programming, maintenance or inspection to ensure correct use. Understand this numerical controller, safety items and cautions before using the unit. This manual ranks the safety precautions into "DANGER", "WARNING" and "CAUTION". DANGER WARNING CAUTION When the user may be subject to imminent fatalities or major injuries if handling is mistaken. When the user may be subject to fatalities or major injuries if handling is mistaken. When the user may be subject to injuries or when physical damage may occur if handling is mistaken. Note that even items ranked as " CAUTION", may lead to major results depending on the situation. In any case, important information that must always be observed is described. Not applicable in this manual. DANGER WARNING. Items related to operation If the operation start position is set in a block which is in the middle of the program and the program is started, the program before the set block is not executed. Please confirm that G and F modal and coordinate values are appropriate. If there are coordinate system shift commands or M, S, T and B commands before the block set as the start position, carry out the required commands using the MDI, etc. If the program is run from the set block without carrying out these operations, there is a danger of interference with the machine or of machine operation at an unexpected speed, which may result in breakage of tools or machine tool or may cause damage to the operators. Under the constant surface speed control (during G96 modal), if the axis targeted for the constant surface speed control moves toward the spindle center, the spindle rotation speed will increase and may exceed the allowable speed of the workpiece or chuck, etc. In this case, the workpiece, etc. may jump out during machining, which may result in breakage of tools or machine tool or may cause damage to the operators.

6 . Items related to product and manual CAUTION For items described as "Restrictions" or "Usable State" in this manual, the instruction manual issued by the machine maker takes precedence over this manual. An effort has been made to describe special handling of this machine, but items that are not described must be interpreted as "not possible". This manual is written on the assumption that all option functions are added. Refer to the specifications issued by the machine maker before starting use. Refer to the Instruction Manual issued by each machine maker for details on each machine tool. Some screens and functions may differ depending on the NC system or its version, and some functions may not be possible. Please confirm the specifications before use. 2. Items related to operation Before starting actual machining, always carry out dry operation to confirm the machining program, tool offset amount and workpiece offset amount, etc. If the workpiece coordinate system offset amount is changed during single block stop, the new setting will be valid from the next block. Turn the mirror image ON and OFF at the mirror image center. If the tool offset amount is changed during automatic operation (including during single block stop), it will be validated from the next block or blocks onwards. 3. Items related to programming The commands without Nos. following "G" become a "G00" operation during running. " ; " "EOB" and " %" "EOR" are explanatory notations. The actual codes are "Line feed" and "%" for ISO, and "End of block" and "End of Record" for EIA. When creating the machining program, select the appropriate machining conditions, and make sure that the performance, capacity and limits of the machine and NC are not exceeded. The examples do not consider the machining conditions. Do not change fixed cycle programs without the prior approval of the machine maker. When programming the multi-system, take special care to the movements of the programs for other systems.

7 Disposal (Note) This symbol mark is for EU countries only. This symbol mark is according to the directive 2006/66/EC Article 20 Information for endusers and Annex II. Your MITSUBISHI ELECTRIC product is designed and manufactured with high quality materials and components which can be recycled and/or reused. This symbol means that batteries and accumulators, at their end-of-life, should be disposed of separately from your household waste. If a chemical symbol is printed beneath the symbol shown above, this chemical symbol means that the battery or accumulator contains a heavy metal at a certain concentration. This will be indicated as follows: Hg: mercury (0,0005%), Cd: cadmium (0,002%), Pb: lead (0,004%) In the European Union there are separate collection systems for used batteries and accumulators. Please, dispose of batteries and accumulators correctly at your local community waste collection/ recycling centre. Please, help us to conserve the environment we live in!

8

9 Contents Page. Control Axes.... Coordinate word and control axis....2 Coordinate systems and coordinate zero point symbols Input Command Units Input command units Input setting units Data Formats Tape codes Program formats Program address check function Tape memory format Optional block skip; / Program/sequence/block numbers; O, N Parity H/V G code lists Precautions before starting machining Buffer Register Input buffer Pre-read buffers Position Commands Position command methods; G90, G Inch/metric command change; G20, G Decimal point input Interpolation Functions Positioning (Rapid traverse); G Linear interpolation; G Plane selection; G7, G8, G Circular interpolation; G02, G R-specified circular interpolation; G02, G Helical interpolation ; G7 to G9, G02, G Thread cutting Constant lead thread cutting ; G Inch thread cutting; G Uni-directional positioning; G Circular interpolation; G Pole coordinate interpolation; G Exponential function interpolation; G02.3, G Polar coordinate command; G Spiral Interpolation; G02./G I

10 7. Feed Functions Rapid traverse rate Cutting feed rate F-digit feed Synchronous feed; G94, G Feedrate designation and effects on control axes Exact stop check; G Exact stop check mode ; G Deceleration check G -> G0 deceleration check G -> G deceleration check Automatic corner override ; G Tapping mode ; G Cutting mode ; G Dwell Per-second dwell ; G Miscellaneous Functions Miscellaneous functions (M8-digits BCD) Secondary miscellaneous functions (B8-digits, A8 or C8-digits) Index table indexing Spindle Functions Spindle functions (S2-digits BCD)... During standard PLC specifications Spindle functions (S6-digits Analog) Spindle functions (S8-digits) Constant surface speed control; G96, G Constant surface speed control Spindle clamp speed setting; G Spindle/C axis control Spindle synchronization control II Multiple spindle control Multiple spindle control I (multiple spindle command) Multiple spindle control I (spindle selection command) Multiple spindle control II Tool Functions Tool functions (T8-digit BCD) Tool Offset Functions Tool offset Tool length offset/cancel; G43, G44/G Tool radius compensation Tool radius compensation operation Other operations during tool radius compensation G4/G42 commands and I, J, K designation Interrupts during tool radius compensation General precautions for tool radius compensation Changing of offset No. during compensation mode Start of tool radius compensation and Z axis cut in operation Interference check...76 II

11 2.4 Programmed offset input; G Tool position offset; G45 to G Inputting the tool life management data Program Support Functions Canned cycles Standard canned cycles; G80 to G89, G73, G74, G Initial point and R point level return; G98, G Setting of workpiece coordinates in canned cycle mode Special canned cycle; G34, G35, G36, G Subprogram control; M98, M99, M Calling subprogram with M98 and M99 commands Calling subprogram with M98 commands Variable commands User macro specifications User macro commands; G65, G66, G66., G Macro call instruction Variables Types of variables Arithmetic commands Control commands External output commands Precautions Actual examples of using user macros G command mirror image; G50., G Corner chamfering, corner rounding Corner chamfering ",C_ " Corner rounding ",R_ " Linear angle command Circle cutting; G2, G Program parameter input; G0, G Macro interrupt; M96, M Tool change position return; G30. to G Normal line control; G40./G4./G High-accuracy control; G High-speed high-accuracy control High-speed high-accuracy control I, II SSS Control Spline Scaling; G50/G Program coordinate rotation; G68/G III

12 4. Coordinates System Setting Functions Coordinate words and control axes Basic machine, work and local coordinate systems Machine zero point and 2nd, 3rd, 4th reference points (Zero point) Basic machine coordinate system selection; G Coordinate system setting ;G Automatic coordinate system setting Reference (zero) point return; G28, G nd, 3rd and 4th reference (zero) point return; G Simple zero point return Reference point check; G Work coordinate system setting and offset ; G54 to G59 (G54.) Local coordinate system setting; G Workpiece coordinate system preset; G Measurement Support Functions Automatic tool length measurement; G Skip function; G Multi-stage skip function; G3.n, G Multi-skip function Speed change skip Programmable current limitation Machining mode High-speed machining mode Appendix. Program Parameter Input N No. Correspondence Table Appendix 2. Program Error Appendix 3. Order of G Function Command Priority (Command in a separate block when possible) IV

13 . Control Axes. Coordinate word and control axis. Control Axes. Coordinate word and control axis Function and purpose In the standard specifications, there are 3 control axes, but, by adding an additional axis, up to 4 axes can be controlled. The designation of the processing direction responds to those axes and uses a coordinate word made up of alphabet characters that have been decided beforehand. X-Y table +Z +Z +Y +X Program coordinates Workpiece X-Y table +Y Direction of Bed table movement +X Direction of table movement X-Y and revolving table +X Direction of table movement +Y Workpiece +C Direction of table revolution +Z +Y +C +X Program coordinates

14 . Control Axes.2 Coordinate systems and coordinate zero point symbols.2 Coordinate systems and coordinate zero point symbols Function and purpose : Reference point : Machine coordinate zero point : Work coordinate zero points (G54 - G59) -X Basic machine coordinate system Machine zero point x y Work coordinate system 3 (G56) y 3 Work coordinate system 2 (G55) y 2 Work coordinate system (G54) st reference point x 3 x 2 Work coordinate system 6 (G59) Work coordinate system 5 (G58) y 5 x Work coordinate system 4 (G57) Local coordinate system (G52) y -Y x 5 2

15 2. Input Command Units 2. Input command units 2. Input Command Units 2. Input command units Function and purpose These are the units used for the movement amounts in the program as commanded by the MDI input and command tape. They are expressed in millimeters, inches or degrees ( ). 2.2 Input setting units Function and purpose These are the units of setting data which are used, as with the compensation amounts, in common for all axes. The input setting units and input command units can be selected from the following types for each axis with the parameters. (For further details on settings, refer to the Operation Manual.) Input command unit Input setting unit Input unit parameters Linear axis Millimeter Inch Rotary axis ( ) #05 cunit = = = = #003 iunit = B = C (Note ) Inch/metric conversion is performed in either of 2 ways: conversion from the parameter screen ("#04 I_inch: valid only when the power is switched on) and conversion using the G command (G20 or G2). However, when a G command is used for the conversion, the conversion applies only to the input command units and not to the input setting units. Consequently, the tool offset amounts and other compensation amounts as well as the variable data should be preset to correspond to inches or millimeters. (Note 2) The millimeter and inch systems cannot be used together. (Note 3) During circular interpolation on an axis where the input command units are different, the center command (I, J, K) and the radius command (R) can be designated by the input setting units. (Use a decimal point to avoid confusion.) 3

16 3. Data Formats 3. Tape codes 3. Data Formats 3. Tape codes Function and purpose The tape command codes used for this controller are combinations of alphabet letters (A, B, C,... Z), numbers (0,, ) and signs (+,, /...). These alphabet letters, numbers and signs are referred to as characters. Each character is represented by a combination of 8 holes which may, or may not, be present. These combinations make up what is called codes. This controller uses, the ISO code (R-840). (Note ) If a code not given in the tape code table in Fig. is assigned during operation, program error (P32) will result. (Note 2) For the sake of convenience, a semicolon " ; " has been used in the CNC display to indicate the end of a block (EOB/IF) which separates one block from another. Do not use the semicolon key, however, in actual programming but use the keys in the following table instead. CAUTION " ; " "EOB" and " %" "EOR" are explanatory notations. The actual codes are "Line feed" and "%" for ISO, and "End of block" and "End of Record" for EIA. Detailed description EOB/EOR keys and displays Code used Key used ISO Screen display End of block LF or NL ; End of record % % () Significant data section (label skip function) All data up to the first EOB ( ; ), after the power has been turned on or after operation has been reset, are ignored during automatic operation based on tape, memory loading operation or during a search operation. In other words, the significant data section of a tape extends from the character or number code after the initial EOB ( ; ) code after resetting to the point where the reset command is issued. 4

17 3. Data Formats 3. Tape codes (2) Control out, control in When the ISO code is used, all data between control out "(" and control in ")" or ";" are ignored, although these data appear on the setting and display unit. Consequently, the command tape name, number and other such data not directly related to control can be inserted in this section. This information (except (B) in the tape codes) will also be loaded, however, during tape loading. The system is set to the "control in" mode when the power is witched on. Example of ISO code L C S L F R G00X-85000Y-64000(CUTTER P RE T URN ) F Operator information print-out example Information in this section is ignored and nothing is executed. (3) EOR (%) code Generally, the end-or-record code is punched at both ends of the tape. It has the following functions: (a) Rewind stop when rewinding tape (with tape handler) (b) Rewind start during tape search (with tape handler) (c) Completion of loading during tape loading into memory (4) Tape preparation for tape operation (with tape handler) % 0cm ; ; ; ; 0cm % 2m (EOR) (EOB) (EOB) (EOB) (EOB) Initial block Last block (EOR) 2m If a tape handler is not used, there is no need for the 2-meter dummy at both ends of the tape and for the head EOR (%) code. 5

18 3. Data Formats 3. Tape codes ISO code (R-840) Feed holes Channel No A B C D E F G H I J K L M N O P Q R S T U V W X Y Z + -., / % LF(Line Feed) or NL ( (Control Out) ) (Control In) : # * = [ ] SP(Space) CR(Carriage Return) BS(Back Space) HT(Horizontal Tab) &! $ (Apostrophe) ; A < DEL(Delete) NULL DEL(Delete) B Under the ISO code, IF or NL is EOB and % is EOR. Under the ISO code, CR is meaningless, and EOB will not occur. Code A are stored on tape but an error results (except when they are used in the comment section) during operation. The B codes are non-working codes and are always ignored. Parity V check is not executed. Table of tape codes 6

19 3. Data Formats 3.2 Program formats 3.2 Program formats Function and purpose The prescribed arrangement used when assigning control information to the controller is known as the program format, and the format used with this controller is called the "word address format". Detailed description () Word and address A word is a collection of characters arranged in a specific sequence. This entity is used as the unit for processing data and for causing the machine to execute specific operations. Each word used for this controller consists of an alphabet letter and a number of several digits (sometimes with a " " sign placed at the head of the number.). * Word Numerals Alphabet (address) Word configuration The alphabet letter at the head of the word is the address. It defines the meaning of the numerical information which follows it. For details of the types of words and the number of significant digits of words used for this controller, refer to the "format details". (2) Blocks A block is a collection of words. It includes the information which is required for the machine to execute specific operations. One block unit constitutes a complete command. The end of each block is marked with an EOB (end-of-block) code. (Example :) G0X ; GX F500 ; (Example 2:) (G0X ; ) GX F500 ; 2 blocks Since the semicolon in the parentheses will not result in an EOB, it is block. (3) Programs A program is a collection of several blocks. 7

20 3. Data Formats 3.2 Program formats <Brief summary of format details> Metric command Inch command Rotary axis Rotary axis (Metric command) (Inch command) Program number 08 Sequence number N5 Preparatory function G3/G2 0.00( ) mm/ Movement inch X+53 Y+53 Z+53 α+53 X+44 Y+44 Z+44 α+44 X+53 Y+53 Z+53 α+53 X+53 Y+53 Z+53 α+53 axis 0.000( ) mm/ inch X+44 Y+44 Z+44 α+44 X+35 Y+35 Z+35 α+35 X+44 Y+44 Z+44 α+44 X+44 Y+44 Z+44 α+44 Arc and cutter radius Dwell Feed function 0.00( ) mm/ inch 0.000( ) mm/ inch 0.00( ) mm/ inch 0.000( ) mm/ inch 0.00( ) mm/ inch ( ) mm/ inch I+53 J+53 K+53 R+53 I+44 J+44 K+44 R+44 I+53 J+53 K+53 R+53 I+44 J+44 K+44 R+44 I+35 J+35 K+35 R+35 I+44 J+44 K+44 R+44 I+44 J+44 K+44 R+44 (Note 5) I+35 J+35 K+35 R+35 (Note 5) X+53/P+8 X+53/P+8 F63(Feed per minute) F43(Feed per revolution) F54(Feed per minute) F34(Feed per revolution) F44(Feed per minute) F34(Feed per revolution) F35(Feed per minute) F25(Feed per revolution) F63(Feed per minute) F43(Feed per revolution) F54(Feed per minute) F34(Feed per revolution) F44(Feed per minute) F34(Feed per revolution) (Note 6) F35(Feed per minute) F25(Feed per revolution) (Note 6) Tool offset H3 D3 Miscellaneous function (M) M8 Spindle function (S) S8 Tool function (T) T8 2nd miscellaneous function A8/B8/C8 Subprogram P8 H5 L4 0.00( ) mm/ Fixed cycle inch 0.000( ) mm/ inch R+53 Q53 P8 L4 R+44 Q44 P8 L4 (Note ) α indicates the additional axis address, such as A, B or C. (Note 2) The No. of digits check for a word is carried out with the maximum number of digits of that address. (Note 3) Numerals can be used without the leading zeros. (Note 4) The meanings of the details are as follows: Example : 08 :8-digit program number Example 2 : G2 :Dimension G is 2 digits to the left of the decimal point, and digit to the right. Example 3 : X+53 :Dimension X uses + or - sign and represents 5 digits to the left of the decimal point and 3 digits to the right. For example, the case for when the X axis is positioned (G00) to the mm position in the absolute value (G90) mode is as follows: G00 X45.23 ; 3 digits below the decimal point 5 digits above the decimal point, so it's , but the leading zeros and the mark (+) have been omitted. G0 is possible, too. (Note 5) If an arc is commanded using a rotary axis and linear axis while inch commands are being used, the degrees will be converted into 0. inches for interpolation. (Note 6) While inch commands are being used, the rotary axis speed will be in increments of 0 degrees. Example: With the F. (per-minute-feed) command, this will become the 0 degrees/minute command. (Note 7) The decimal places below the decimal point are ignored when a command, such as an S command, with an invalid decimal point has been assigned with a decimal point. (Note 8) This format is the same for the value input from the memory, MDI or setting and display unit. (Note 9) Command the program No. in an independent block. Command the program No. in the head block of the program. 8

21 3. Data Formats 3.3 Program address check function 3.3 Program address check function Function and purpose The program can be checked in word units when operating machining programs. Detailed description () Address check This function enables simple checking of program addresses in word units. If the alphabetic characters are continuous, the program error (P32) will occur. Availability of this function is selected by the parameter "#227 aux/bit4". Note that an error will not occur for the following: Reserved words Comment statements (2) Word range check When the operation expression is used for the word data, check whether one word data is enclosed in brackets "[ ]" or not. If it is not enclosed, the program error (P33) will occur. Availability of this function is selected by the parameter "#274 ext0/bit7". Example of program () Example of program for address check (Example ) When there are no numbers following an alphabetic character. G28 X ; An error will occur. Change to "G28 X0;", etc. (Example 2) When a character string is illegal. TEST ; An error will occur. Change to "(TEST);", etc. (2) Example of program for word range check X-00.-#24 Z+#500*TAN[#] Y-SIN[60.] An error will occur. Change as shown below. X-[00.+#24] Z+[#500*TAN[#]] Y-SIN[60.] The numbers of brackets that can be used for one word data are maximum five. If six brackets or more are commanded, the program error (P280) will occur. 9

22 3. Data Formats 3.4 Tape memory format 3.4 Tape memory format Function and purpose () Storage tape and significant sections The others are about from the current tape position to the EOB. Accordingly, under normal conditions, operate the tape memory after resetting. The significant codes listed in "Table of tape codes" in "3. Tape Codes" in the above significant section are actually stored into the memory. All other codes are ignored and are not stored. The data between control out "(" and control in ")" are stored into the memory. 3.5 Optional block skip ; / Function and purpose This function selectively ignores specific blocks in a machining program which starts with the "/" (slash) code. Detailed description () Provided that the optional block skip switch is ON, blocks starting with the "/" code are ignored. They are executed if the switch is OFF. Parity check is valid regardless of whether the optional block skip switch is ON or OFF. When, for instance, all blocks are to be executed for one workpiece but specific block are not to be executed for another workpiece, the same command tape can be used to machine different parts by inserting the "/" code at the head of those specific blocks. Precautions for using optional block skip () Put the "/" code for optional block skip at the beginning of a block. If it is placed inside the block, it is assumed as a user macro, a division instruction. Example : N20 G X25./Y25. ;... NG (User macro, a division instruction; a program error results.) /N20 G X25. Y25. ;... OK (2) Parity checks (H and V) are conducted regardless of the optional block skip switch position. (3) The optional block skip is processed immediately before the pre-read buffer. Consequently, it is not possible to skip up to the block which has been read into the pre-read buffer. (4) This function is valid even during a sequence number search. (5) All blocks with the "/" code are also input and output during tape storing and tape output, regardless of the position of the optional block skip switch. 0

23 3. Data Formats 3.6 Program/sequence/block numbers ; O, N 3.6 Program/sequence/block numbers ; O, N Function and purpose These numbers are used for monitoring the execution of the machining programs and for calling both machining programs and specific stages in machining programs. () Program numbers are classified by workpiece correspondence or by subprogram units, and they are designated by the address "0" followed by a number with up to 8 digits. (2) Sequence numbers are attached where appropriate to command blocks which configure machining programs, and they are designated by the address "N" followed by a number with up to 5 digits. (3) Block numbers are automatically provided internally. They are preset to zero every time a program number or sequence number is read, and they are counted up one at a time unless program numbers or sequence numbers are commanded in blocks which are subsequently read. Consequently, all the blocks of the machining programs given in the table below can be determined without further consideration by combinations of program numbers, sequence numbers and block numbers. Machining program Monitor display Program No. Sequence No. Block No. O (DEMO, PROG) ; G92 X0 Y0 ; G90 G5 X-50. P0.75 ; N00 G00 X-50. Y-25. ; N0 G0 X250. F300 ; Y-225. ; X-50. ; Y-25.; N20 G5 Y-25. P0.5 ; N30 G00 X-00. Y-75. ; N40 G0 X-200. ; Y-75. ; X-00. ; Y-75. ; N50 G00 G50 X0 Y0 ; N60 M02 ; %

24 3. Data Formats 3.7 Parity H/V 3.7 Parity H/V Function and purpose Parity check provides a mean of checking whether the tape has been correctly perforated or not. This involves checking for perforated code errors or, in other words, for perforation errors. There are two types of parity check: Parity H and Parity V. () Parity H Parity H checks the number of holes configuring a character and it is done during tape operation, tape input and sequence number search. A parity H error is caused in the following cases. (a) ISO code When a code with an odd number of holes in a significant data section has been detected. Parity H error example This character causes a parity H error. When a parity H error occurs, the tape stops following the alarm code. (2) Parity V A parity V check is done during tape operation, tape input and sequence number search when the I/O PARA #9n5 (n is the unit No. to 5) parity V check function is set to "". It is not done during memory operation. A parity V error occurs in the following case: when the number of codes from the first significant code to the EOB (;) in the significant data section in the vertical direction of the tape is an odd number, that is, when the number of characters in one block is odd. When a parity V error is detected, the tape stops at the code following the EOB (;). (Note ) Among the tape codes, there are codes which are counted as characters for parity and codes which are not counted as such. For details, refer to the "Table of tape codes" in "3. Tape Codes". (Note 2) Any space codes which may appear within the section from the initial EOB code to the address code or "/" code are counted for parity V check. 2

25 3. Data Formats 3.8 G code lists 3.8 G code lists Function and purpose G code Group Function 00 0 Positioning 0 0 Linear interpolation 02 0 Circular interpolation CW (clockwise) 03 0 Circular interpolation CCW (counterclockwise) Exponential function interpolation positive rotation Exponential function interpolation negative rotation Dwell High-speed high-accuracy control II High-speed high-accuracy control I Cylindrical interpolation Exact stop check 0 00 Program parameter input/compensation input 00 Program parameter input cancel 2 00 Circular cut CW (clockwise) 3 00 Circular cut CCW (counterclockwise) Polar coordinate interpolation ON * Polar coordinate interpolation cancel 4 * 5 8 Polar coordinate command OFF 6 8 Polar coordinate command ON 7 02 Plane selection X-Y 8 02 Plane selection Z-X 9 02 Plane selection Y-Z Inch command 2 06 Metric command Reference point check Reference point return Start point return nd to 4th reference point return Tool change position return Tool change position return Tool change position return Tool change position return Tool change position return Tool change position return Skip 3

26 3. Data Formats 3.8 G code lists G code Group Function Multi-skip function Multi-skip function Multi-skip function Thread cutting Special fixed cycle (bolt hole circle) Special fixed cycle (line at angle) Special fixed cycle (arc) Automatic tool length measurement Special fixed cycle (grid) Tool radius compensation vector designation Tool radius compensation corner arc * Tool radius compensation cancel 4 07 Tool radius compensation left Tool radius compensation right * Normal line control cancel 4. 5 Normal line control left ON Normal line control right ON Tool length offset (+) Tool length offset (-) st spindle control ON nd spindle control ON Tool position offset (expansion) Tool position offset (reduction) Tool position offset (doubled) Tool position offset (halved) Two-spindles simultaneous control ON * Tool length offset cancel * 50 Scaling cancel 5 Scaling ON * G command mirror image cancel 5. 9 G command mirror image ON Local coordinate system setting Machine coordinate system selection * 54 2 Work coordinate system selection 55 2 Work coordinate system 2 selection 56 2 Work coordinate system 3 selection 57 2 Work coordinate system 4 selection 58 2 Work coordinate system 5 selection 59 2 Work coordinate system 6 selection Work coordinate system selection 48 sets expanded Uni-directional positioning 6 3 Exact stop check mode 6. 3 High-accuracy control 62 3 Automatic corner override 63 3 Tapping mode Synchronous tapping mode (normal tapping) Synchronous tapping mode (reverse tapping) * 64 3 Cutting mode User macro call 66 4 User macro modal call A User macro modal call B 4

27 3. Data Formats 3.8 G code lists G code Group Function * 67 4 User macro modal call cancel 68 6 Coordinate conversion mode ON * 69 6 Coordinate conversion mode OFF User fixed cycle 7 09 User fixed cycle User fixed cycle Fixed cycle (step) Fixed cycle (reverse tap) User fixed cycle Fixed cycle (fine boring) User fixed cycle User fixed cycle User fixed cycle * Fixed cycle cancel 8 09 Fixed cycle (drill/spot drill) Fixed cycle (drill/counter boring) Fixed cycle (deep drilling) Fixed cycle (tapping) Fixed cycle (boring) Fixed cycle (boring) Fixed cycle (back boring) Fixed cycle (boring) Fixed cycle (boring) Absolute value command 9 03 Incremental command value Machine coordinate system setting Asynchronous feed (per-minute feed) Synchronous feed (per-revolution feed) 96 7 Constant surface speed control ON 97 7 Constant surface speed control OFF * 98 0 Fixed cycle Initial level return 99 0 Fixed cycle R point level return 00 to User macro (G code call) Max. 0 5

28 3. Data Formats 3.8 G code lists (Note ) Codes marked with * are codes that must be or are selected in the initial state. The codes marked with are codes that should be or are selected in the initial state by the parameters. (Note 2) If two or more G codes from the same code are commanded, the latter G code will be valid. (Note 3) This G code list is a list of conventional G codes. Depending on the machine, movements that differ from the conventional G commands may be included when called by the G code macro. Refer to the Instruction Manual issued by the machine maker. (Note 4) Whether the modal is initialized or not depends on each reset input. () "Reset " The modal is initialized when the reset initial parameter "#5 rstinit" turns ON. (2) "Reset 2" and "Reset & rewind" The modal is initialized when the signal is input. (3) Resetting when emergency stop is canceled Follows "Reset ". (4) When modal is automatically reset at the start of individual functions such as reference point return. Follows "Reset & rewind". CAUTION The commands with no value after G" will be handled as "G00". 3.9 Precautions before starting machining Precautions before starting machining CAUTION When creating the machining program, select the appropriate machining conditions so that the machine, NC performance, capacity and limits are not exceeded. The examples do not allow for the machining conditions. Carry out dry operation before actually machining, and confirm the machining program, tool offset and workpiece offset amount. 6

29 4. Buffer Register 4. Input buffer 4. Buffer Register 4. Input buffer Function and purpose When the pre-read buffer is empty during a tape operation or RS232C operation, the contents of the input buffer are immediately transferred to the pre-read buffers and, provided that the data stored in the input buffer do not exceed characters, the following data (Max. 250 characters) are read and loaded into the input buffer. This buffer is designed to eliminate the operational delay originating in the readout time of the tape reader and to smooth out the block joints. The pre-reading effects are lost, however, when the block execution time is shorter than the tape readout time of the following block. Analysis processing Tape (Buffer size : characters) Input buffer Max. 5 execution blocks Pre-read buffer 5 Buffer 4 Memory Buffer 3 Keyboard Mode switching Buffer 2 Buffer Arithmetic processing MDI data Note : Data equivalent to block are stored in pre-read buffer. The input buffer has a memory capacity of characters (including the EOB code). () The contents of the input buffer register are updated in 250-character units. (2) Only the significant codes in the significant data section are read into the input buffer. (3) When codes (including "(" and ")") are sandwiched in the control in or control out mode and the optional block skip function is ON, the data extending from the "/" (slash) code up to the EOB code are read into the input buffer. (4) The input buffer contents are cleared with resetting. (Note ) The input buffer size (250 characters) differs according to the model. 7

30 4. Buffer Register 4.2 Pre-read buffers 4.2 Pre-read buffers Function and purpose During automatic processing, the contents of block are normally pre-read so that program analysis processing is conducted smoothly. However, during tool radius compensation, a maximum of 5 blocks are pre-read for the intersection point calculation including interference check. The specifications of the data in block are as follows: () The data of block are stored in this buffer. (2) Only the significant codes in the significant data section are read into the pre-read buffer. (3) When codes are sandwiched in the control in and control out, and the optional block skip function is ON, the data extending from the "/" (slash) code up to the EOB code are not read into the pre-read buffer. (4) The pre-read buffer contents are cleared with resetting. (5) When the single block function is ON during continuous operation, the pre-read buffer stores the following block data and then stops operation. Other precautions () Depending on whether the program is executed continuously or by single blocks, the timing of the valid/invalid for the external control signals for the block skip and others will differ. (2) If the external control signal such as optional block skip is turned ON/OFF with the M command, the external control operation will not be effective on the program pre-read with the buffer register. (3) According to the M command that operates the external controls, it prohibits pre-reading, and the recalculation is as follows: The M command that commands the external controls is distinguished at the PLC, and the "recalculation request" for PLC -> NC interface table is turned ON. (When the "recalculation request" is ON, the program that has been pre-read is reprocessed.) 8

31 5. Position Commands 5. Position command methods 5. Position Commands 5. Position command methods ; G90, G9 Function and purpose By using the G90 and G9 commands, it is possible to execute the next coordinate commands using absolute values or incremental values. The R-designated circle radius and the center of the circle determined by I, J, K are always incremental value commands. Command format G9D Xx Yy Zz αα G90 G9 α :Absolute value command :Incremental command :Additional axis Detailed description () Regardless of the current position, in the absolute value mode, it is possible to move to the position of the workpiece coordinate system that was designated in the program. Y 200. Tool N G90 G00 X0 Y0 ; 00. N In the incremental value mode, the current position is the start point (0), and the movement is made only the value determined by the program, and is expressed as an incremental value. W 00. N X 300. N 2 G90 G0 X200. Y50. F00; N 2 G9 G0 X200. Y50. F00; Using the command from the 0 point in the workpiece coordinate system, it becomes the same coordinate command value in either the absolute value mode or the incremental value mode. (2) For the next block, the last G90/G9 command that was given becomes the modal. (G90) N 3 X00. Y00.; Y 200. The axis moves to the workpiece coordinate system X = 00mm and Y = 00mm position. 00. N3 (G9) N 3 X 00. Y50.; W X 300. The X axis moves to -00.mm and the Y axis to +50.0mm as an incremental value, and as a result X moves to 00.mm and Y to 00.mm. 9

32 5. Position Commands 5. Position command methods (3) Since multiple commands can be issued in the same block, it is possible to command specific addresses as either absolute values or incremental values. Y 200. N 4 G90 X300. G9 Y00.; The X axis is treated in the absolute 00. value mode, and with G90 is moved to the workpiece coordinate system 300.mm position. The Y axis is moved +00.mm with G9. As a result, W Y moves to the 200.mm position. In terms of the next block, G9 remains as the modal and becomes the incremental value mode. (4) When the power is turned ON, it is possible to select whether you want absolute value commands or incremental value commands with the #073 I_Absm parameter. (5) Even when commanding with the manual data input (MDI), it will be treated as a modal from that block. N4 X

33 5. Position Commands 5.2 Inch/metric command change 5.2 Inch/metric command change; G20, G2 Function and purpose These G commands are used to change between the inch and millimeter (metric) systems. Command format G20/G2; G20 G2 : Inch command : Metric command Detailed description G20 and G2 selection is meaningful only for linear axes and it is meaningless for rotary axes. The input unit for G20 and G2 will not change just by changing the command unit. In other words, if the machining program command unit changes to an inch unit at G20 when the initial inch is OFF, the setting unit of the tool offset amount will remain metric. Thus, take note to the setting value. (Example ) Relationship between input command units and G20/G2 commands (with decimal point input type ) Axis X Y Z B Input command unit type (cunit) Command Metric output (#06 iout=0) Inch output (#06 iout=) example G2 G20 G2 G20 X00; Y00; Z00; B00; 0.00mm 0.00mm.00mm mm 0.254mm 2.54mm inch inch 0.039inch inch 0.000inch 0.00inch 0.0 (Note ) When changing between G20 and G2 with program commands, it is necessary in advance, to convert the parameters, variables, and the offsets for the tool diameter, tool position, tool length, to the units in the input settings of the input setting unit system (for each axis) that have inch or metric commands, and make the settings using the parameter tape. (Example 2) Input setting unit #05 cunit=0, #04 I_inch=0 Position command unit mm Compensation amount setting unit... When the compensation amount is 0.05mm for 0.00mm In the above example, when changing from G2 to G20, the compensation amount must be set to ( = ). (Note 2) Since the data before the change will be executed at the command unit after the change, command the F speed command for the change so that it is the correct speed command for the command unit system applied after the change. 2

34 5. Position Commands 5.2 Inch/metric command change Output unit, command unit and setting unit Select whether to issue the counter or parameter setting and display unit as a command unit determined by the G20/G2 command modal, or as the internal unit determined by parameter "#04 I_inch". If the command unit setting display is selected when initial metric (internal unit metric) is set with the base specification parameter "#226 aux0/bit6", the counter and parameters will be displayed as metric units during the G2 command mode. The internal unit metric data will be converted into an inch unit and displayed during the G20 command mode. The command unit for when the power is turned ON and reset can be selected regardless of the internal unit by setting the base specification parameter "#52 I_G20". NC axis Item Movement/ speed command Initial inch OFF (metric internal unit) #04 I_inch=0 #226 aux0/bit6=0 Follows internal unit #226 aux0/bit6= Follows command unit Initial inch ON (inch internal unit) #04 I_inch= #226 aux0/bit6=0 Follows internal unit #226 aux0/bit6= Follows internal unit G2 G20 G2 G20 G2 G20 G2 G20 Metric Inch Metric Inch Metric Inch Counter display Metric Metric Metric Inch Inch Inch Speed display Metric Metric Metric Inch Inch Inch User parameter setting/display Workpiece/ tool offset setting/display Handle feed command Setup parameter setting/display PLC axis Metric Metric Metric Inch Inch Inch Metric Metric Metric Inch Inch Inch Metric Metric Metric Inch Inch Inch Item Movement/ speed command Follows "#040 M_inch" #042 pcinch=0 (metric) Metric #042 pcinch= (inch) Inch Counter display Metric Inch User parameter setting/display Setup parameter setting/display Metric Follows "#040 M_inch" Inch The "#226 aux0/bit6" parameter is invalid when initial inch is ON. Even if is set, the setting and display will follow the internal unit in the same manner as when 0 is set. When using both the NC axis and PLC axis as rotation axes, three digits below the decimal point will be displayed for the coordinate data, etc., even for the inch command. 22

35 5. Position Commands 5.2 Inch/metric command change Usage examples The screen display will change in the following manner according to the parameter settings. Parameter setting Program command/ screen operation #04 I_inch 0 #52 I_G20 0 #226 aux0/bit6 0 Initial metric G2 (metric) mode at reset Setting and display unit is internal unit #04 I_inch 0 #52 I_G20 0 #226 aux0/bit6 Initial metric G2 (metric) mode at reset Setting and display unit is command unit [POSITION] X Y Z [POSITION] X Y Z mm. mm. [TOOL OFFSET] # mm. [TOOL OFFSET] # mm. Inch command G20 G0 X. Y2. Z3. ; [POSITION] X Y Z in. Internal data 25.4(mm) 50.8(mm) 76.2(mm) Display unit is also inch following the command unit [POSITION] X.0000 Y Z in. Internal data 25.4(mm) 50.8(mm) 76.2(mm) [TOOL OFFSET] # in. [TOOL OFFSET] # in. Internal data #0.(mm) #()( ) Input [TOOL OFFSET] # in. Internal data.0(mm) Set with inch unit [TOOL OFFSET] # in. Internal data 25.4(mm) 23

36 5. Position Commands 5.2 Inch/metric command change Parameter setting Program command/ screen operation #04 I_inch 0 #52 I_G20 0 #226 aux0/bit6 0 Initial metric G2 (metric) mode at reset Setting and display unit is internal unit #04 I_inch 0 #52 I_G20 0 #226 aux0/bit6 Initial metric G2 (metric) mode at reset Setting and display unit is command unit Reset Display unit is also metric following the command unit [POSITION] X Y Z [POSITION] X Y Z mm. mm. [TOOL OFFSET] # mm. [TOOL OFFSET] # mm. Precautions () If the tool and workpiece offset data are added with an inch command unit and metric internal unit, an error may occur. (2) The internal unit is a unit that follows #04 I_inch. Internal unit when #04 I_inch=0 : mm Internal unit when #04 I_inch= : inch (3) The parameters are input and output with an internal unit. (4) If the tool data input/output unit selection (#220 aux04/bit4:) is valid, the tool data will be input and output with the "#52 I_G20" setting unit. However, in all other cases, the data will be input/output with the internal unit. 24

37 5. Position Commands 5.3 Decimal point input 5.3 Decimal point input Function and purpose This function enables the decimal point command to be input. It assigns the decimal point in millimeter or inch units for the machining program input information that defines the tool paths, distances and speeds. A parameter #078 Decpt2 selects whether type I (minimum input command unit) or type II (zero point) is to apply for the least significant digit of data without a decimal point. Command format Detailed description. : Metric command. : Inch command () The decimal point command is valid for the distances, angles, times, speeds and scaling rate, in machining programs. (Note, only after G5) (2) In decimal point input type and type 2, the values of the data commands without the decimal points are shown in the table below. Command Command unit system Type Type 2 cunit = (µm, 0 4 inch, 0 3 ) (mm, inch, ) X ; cunit = cunit = 00 0 cunit = 0 (3) The valid addresses for the decimal points are X, Y, Z, U, V, W, A, B, C, I, J, K, E, F, P, Q, and R. However, P is valid only during scaling. For details, refer to the list. (4) See below for the number of significant digits in decimal point commands. (Input command unit cunit = 0) Movement Movement Feed rate Dwell command (linear) command (rotary) MM (millimeter) INCH (inch) Integer 0. to to Decimal part.000 to to.9999 Integer 0. to (359.) Decimal part.000 to.999 Integer 0. to to to Decimal part.00 to to.999 Integer 0. to to.99 Decimal part.000 to to.999 (5) The decimal point command is valid even for commands defining the variable data used in subprograms. (6) While the smallest decimal point command is validated, the smallest unit for a command without a decimal point designation is the smallest command input unit set in the specifications (µm, 0µm, etc.) or mm can be selected. This selection can be made with parameter #078 Decpt2. (7) Decimal point commands for decimal point invalid addresses are processed as integer data only and everything below the decimal point is ignored. Addresses which are invalid for the decimal point are D, H, L, M, N, O, S and T. All variable commands, however, are treated as data with decimal points. 25